Portable rheostat for welding apparatus.



Y J M.,YOUNT. PORTABLE RHEOSTAT FOB WELDING APPARATUS.

I APPLIOATIQH PILED'JUNE 10', 1912.

1 ,(146 ,708, Patented Dec. 10, 19 12 V WITNESSES: INVENTOR 1 Tooll whom it may concern:

the wiring.

' tween adjacent points during the use of the UNITED STATES PATENT OFFICE. JESSE M. YOIUNHTI, or SAN rnancrsco, CALIFORNIA, ASSIGNOR 0F ONE-THIRD r0 EDWARD s. BRANNA MAN AND ONE-THIRD ro THOMAS F INIGAN, porn or salt rnancrsco, dALIFORNIA.

PbRTA BLE RHEOSTAT FOR WELDIN G APPARATUS.-

Specification of I.etters Patent, Patented-Dec. 10, 1912.

Application filed June10, 1912. Serial No. 702,659.

current is directed through both sets of the resistance elements 2; when opened, then through one set. The current after traversing the resistance members may be delivered to the place of operation through a coupling or plug-12 connected to the work line 13 to which may be connected a weldin tool.

For the purpose of quickly ad usting'the apparatus for operation and for enabling it'to be transported rapidly from place to place, the apparatus is provided'with a bull Be it known that I, Jesse M. YoUNr, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and" useful Improvements in Portable Rheostats for lVelding Apparatus, of which the following is a specification. p

This invention relates to a rheostat .designed particularly for ready, easy and rapid arrangement where welding operations are to be performed, the current being tapped from a directcurrent'sourcesuch as that of a street railway system." f

The object of the present invention is to design and provide a rheostat arranged in a suitable mounting or box which is provided with means whereby the rheostat may be readily moved from position to position and whereby the apparatus may be quickly lowered to and swung .from the ground or other surface by means of a crane, which may be on a motor car or elsewhere.

The invention consists of a rheostat structure having suitable connections for coupling with a source of current, the structure being provided with suitable connections or electrieterminals and having attachments for connection with a lifting crane or other hoisting apparatus.

Figure 1 is a perspective view of the sling rheostat. Fig. 2 is 'a side elevation of the improved apparatus. Fig. 3 is a diagram of of cables, or other suitablemeans 15,-to a convenient .portion of the box, and in the present-instance the ends of the cables 15 U-sha-ped bars 17, which are secured to the ends of -thebox 3; each of the braces 17 continuing downwardly and longitudinally across the bottom of the box, as at 18, forming a substantial binder for the box and at the same time providing a dependable means of connection for the cables 15.

hen it is desired to transport the apanother, or from the ground to a car, the

apparatus easily and safely moved.

have provided a simple, substantial, easily transported and adjusted resistance apparatus, which can be quickly placed for opera tion, and when electrically connectedto a source of supply will enable the use of a welding tool to which may be supplied current of the desired strength by the adjustment of the rheostat switch 11 or-cut out by switch 12, Fig. 3. i

For the purpose of thoroughly ventilating the resistance elements during their use the box is provided with covers 20 which are hinged at 21 to the ends 3, and'to the longer edge of each of the covers 20 is hinged, as at 22, sides 23, the covers and sides being adapted for effectually covering the resistance elements when lowered; when the coversare raised to the position shown in Fig. 1, the resistance elements'are open to the In its illustrated form the invention is shown as comprising a number of electric resistance elements 2, of appropriate material, which may be mounted or suspended in a box having end walls 3 and a suitable bottom 4, the box being provided with Vehicle wheels 4' permitting the easy movement beapparatus.

The box 3 is provided with a socket or coupling device 5 into which may be inserted a plug 6 having a wire 7 connected to a source of current 8, which may be a trolley line. One wire as 9 from the connection 5 leads to one set of resistance elements 2 and a branch wire 10 from the line 9 connects to another set of the resistance elements 2, a switch 11 being introduced in the multiple line 10. When the switch 11 is closed the connected covers and sides form a roof protecting the apparatus from rain or snow and also preventing the accidental lnjury to or ring 14 whlch is connected by a plurality,

bull ring 14 is engaged by a lifting device, as a hook 19, of a crane or hoist, and the are secured to the upper ends of substantial paratus or to lift it from one position to From the foregoing it will be seen, that I free circulation of air and yet the hingedly L. in.

-ment,s by foreign pieces falling on their I claim and desire to secure b 7 Patent, is-'- for coupling to a hoist.

short circuiting through the resistance elemounting. for portable rheostats tained therein, said box having lengthwise extending U-shaped Ls extending the ends of the box and thence across the bottom thereof forming a cradle in which the box rests, and the upper ends of the Us having. eyes to which a sling is connected whereby the entire rheostat may be hoisted and moved conveniently.

i 4. A portable rheostat comprising a frame, suitable electric connections for the rheostat including a flexible connection with a supply line and a work line, adjustable covers for the rheostat whereby the saine'may be exposed for ventilation, frame for connecting with a holst.

In testimony whereof I have hereunto set my hand in the presence witnesses.

-' JESSE M. YOUNT.

upper surfaces. 1 n

Having thus described my invention, what y Letters 1.. A portable. rheost-at consisting of a frame mounted on wheels, said frame hav ing means for supporting the resistance elements, suitable electric connections, adjustable covers for the frame whereby the resistance elements may be exposed for ventilat-ion, and a connection secured to the frame 2 In a rheostat mounted on a portable frame, means adjustable to expose-the rheostat for ventilation and form a roof therefor, oradjustable to inclose the same, a dis'connectible conductor joining the rheostatfand the power line and permitting movement 0 rheost-at from position to position, a workine coniiectible with the rheostat, and. a de- Witnesses: vice secure to the frame for coupling the Tnos. FINrGAN, same to a hoist. B. B. TREAT.

five cents each, by addressing the Copies of this patent may be obtained for Washington, D. C.

Commissioner of Patents,

consisting of. a box, resistance means con.

and means'on the down at of two subscribing v 

